Akonadi(數據存儲)

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介紹

The Akonadi framework is responsible for providing applications with a centralized database to store, index and retrieve the user's personal information. This includes the user's emails, contacts, calendars, events, journals, alarms, notes, etc. In SC 4.4, KAddressBook became the first application to start using the Akonadi framework. In SC 4.7, KMail, KOrganizer, KJots, etc. were updated to use Akonadi as well. In addition, several Plasma widgets also use Akonadi to store and retrieve calendar events, notes, etc.

當前,以下這些程式能使用Akonadi框架集中存儲和訪問用戶數據。點擊了解詳細信息。

KMail

View-pim-mail.png Mail Client

Uses Akonadi to store emails

KAddressBook

View-pim-contacts.png Contact Manager

Uses Akonadi to store contact information

KOrganizer

View-pim-calendar.png Personal Organizer

Uses Akonadi to store calendars, events, journals, etc.

KJots

Kjots.png Note Taking Application

Uses Akonadi to store notes

KAlarm

Kalarm.png Personal alarm scheduler

Uses Akonadi to store alarms

In addition to this, plasma widgets like the Digital Clock widget, the Notes widget also use Akonadi to store and retrieve events and notes.

Controlling the Akonadi server

The Akonadi control module started by the context menu of the Akonadi tray icon provides an easy means to starting, stopping, restarting and querying the status of the Akonadi server. You may also accomplish this from the commandline using the command akonadictl. Using this method, you can get additional useful information on the console.

To start the Akonadi server,

akonadictl start

To stop the Akonadi server,

akonadictl stop

To restart a running Akonadi server,

akonadictl restart

To query the status of the Akonadi server,

akonadictl status

Disabling the Akonadi subsystem

The Akonadi server is started by any Akonadi-enabled application. If you don't want Akonadi to be started after login, you have to ensure that no Akonadi-enabled application is launched at login or thereafter. Remember to check Plasma widgets as well — the Digital Clock widget in the default panel, for instance uses Akonadi to (optionally) display calendar events and this is enabled in its settings by default (see the "Display Events" option) . You must remove any widgets that may start it from your start-up, if you wish Akonadi to start only when you start KMail or other applications.


Flag-red.png
 
Remember
If you don't want to have Akonadi' running on your system at all, you can not use any of the Akonadi-enabled applications. Such applications will not work when Akonadi is disabled using the steps below. See the list of Akonadi-enabled applications. Also note, that some Plasma widgets, such as the Digital Clock uses Akonadi.'


The Akonadi server is launched automatically at login whenever any Akonadi-enabled application requests access to it.

To disable the Akonadi subsystem, shut down the running Akonadi server from the control module or the command line:

akonadictl stop

To ensure that Akonadi is not started, check that no applications require it at login. In particular, open the Plasma clock applet preferences, go to Calendar and uncheck Show events to prevent Plasma from requesting information from Akonadi and thus allowing it to start.

Frequently Asked Questions

Where is my data now?

A full explanation of where the data is stored and Akonadi's interaction with it is available in Andras Mantia's blog

Migration problems

Akonadi's Glossary entry has a brief description of its purpose and other useful links. This page explains how Akonadi and KAddressBook work together.


This page was last modified on 25 July 2017, at 10:20. Content is available under Creative Commons License SA 4.0 unless otherwise noted.